Light on/off times Whats yours set at?

[Myka]

I used to run the exact same bulbs as you. Giesemann True Actinic (420nm, not measured in K), and Giesemann Midday. I recently switched to Korallen-Zucht Fiji Purple and AquaScience 17500K, and am waaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa aaaaaay happier with the color, and it's very obvious the bulbs are much brighter. It's too early to tell if there is a difference in coral growth though as I've only had the new bulbs for a few weeks. This combination is barely bluish. Without the Fiji Purple though, the AS 17500K is very blue, but the Fiji Purple pulls it back whiter, and really makes the colors pop. You should start to see with light bluing at about 13000K, but it really depends on the brand, and even on the ballast that is running it. 10000K is supposed to be "pure white".

T5s - on at 10am, off at 9 pm.